CAT and atherosclerosis: Each variable was assessed, and the results showed that age (p = 0.042), GFR (p = 0.006), HDL cholesterol (0.023), serum Cys C (p = 0.016), and the Cat S/Cys C ratio (p = 0.008) were significantly correlated with the presence of three-bed atherosclerosis (Table 6).